HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Porto

$463+ Cheap flights from Honolulu (HNL) to Porto (OPO)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/18. Fares are subject to change and may not be available on all flights or dates of travel.
HNL — OPO
Jul 19 — Jul 261
Sun 7/19
Sun 7/26
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Honolulu to Porto with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Honolulu to Porto

Cheapest flights from Honolulu to Porto
Explore the most affordable flight options available from Honolulu to Porto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 19, 2026.

This FlightHub deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/2510:30 pm
HNL
-
OPO
2 stops30h 50m
Lufthansa
Fri 11/276:00 am
OPO
-
HNL
2 stops25h 33m
Lufthansa
Deal found 6/15$714
This United Airlines deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/259:50 pm
HNL
-
OPO
2 stops25h 40m
United Airlines
Fri 11/2712:35 pm
OPO
-
HNL
1 stop35h 39m
United Airlines
Deal found 6/16$748
This United Airlines deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/2110:53 pm
HNL
-
OPO
2 stops23h 52m
United Airlines
Tue 7/2812:35 pm
OPO
-
HNL
2 stops34h 45m
United Airlines
Deal found 6/18$939
This United Airlines deal was found by Cheapflights users on 6/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/29:40 pm
HNL
-
OPO
2 stops22h 15m
United Airlines
Mon 8/109:00 am
OPO
-
HNL
2 stops39h 28m
United Airlines
Deal found 6/19$1,072
This United Airlines deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/34:00 pm
HNL
-
OPO
2 stops28h 00m
United Airlines
Mon 8/1012:35 pm
OPO
-
HNL
2 stops35h 53m
United Airlines
Deal found 6/16$1,075
This Air Canada deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/219:50 pm
HNL
-
OPO
2 stops22h 10m
Air Canada
Tue 7/2812:15 pm
OPO
-
HNL
3 stops36h 05m
Air Canada
Deal found 6/18$1,348
This KAYAK deal was found by Cheapflights users on 6/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/611:40 pm
HNL
-
OPO
2 stops46h 25m
British Airways
Tue 7/148:55 pm
OPO
-
HNL
2 stops36h 14m
British Airways
Deal found 6/14$1,381
This KLM deal was found by Cheapflights users on 6/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/23:50 pm
HNL
-
OPO
1 stop31h 40m
KLM
Mon 8/108:00 pm
OPO
-
HNL
2 stops36h 20m
KLM
Deal found 6/19$1,435
This Delta deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/23:50 pm
HNL
-
OPO
1 stop31h 40m
Delta
Mon 8/105:00 am
OPO
-
HNL
2 stops25h 11m
Delta
Deal found 6/16$1,442

Find flight deals from Honolulu to Porto

Discover tips and strategies to find the most affordable flight options for your journey from Honolulu (HNL) to Porto (OPO). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated June 19, 2026.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$714
(FlightHub)

One-way from

$463
(United Airlines)
Provider with most accurate pricing for Honolulu-Porto flight deals.
Search Deals
Provider most trusted by Cheapflights users for Honolulu-Porto flights.
Search Deals
From Honolulu to Porto
Search Deals
One-way flight from Honolulu to Porto
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Honolulu to Porto that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 19, 2026.
Use the filters below to find and compare flights from Honolulu to Porto that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

HonoluluPorto

HNL - OPO

HNLOPO

Honolulu

Sun 10/25

10:30 pm-3:20 pm

2 stops30h 50m

Porto

Fri 11/27

6:00 am-9:33 pm

2 stops25h 33m

$714

HonoluluPorto

HNL - OPO

HNLOPO

Honolulu

Sun 10/25

8:10 pm-9:30 am

2 stops27h 20m

Porto

Fri 11/27

12:35 pm-2:14 pm

1 stop35h 39m

$748

HonoluluPorto

HNL - OPO

HNLOPO

Honolulu

Tue 7/21

10:53 pm-9:45 am

2 stops23h 52m

Porto

Tue 7/28

12:35 pm-12:20 pm

2 stops34h 45m

$939

HonoluluPorto

HNL - OPO

HNLOPO

Honolulu

Mon 8/3

7:40 pm-6:15 am

2 stops23h 35m

Porto

Mon 8/10

9:00 am-1:28 pm

2 stops39h 28m

$1,072

HonoluluPorto

HNL - OPO

HNLOPO

Honolulu

Sun 8/2

7:50 pm-9:45 am

2 stops26h 55m

Porto

Mon 8/10

12:35 pm-1:28 pm

2 stops35h 53m

$1,072
Cheapest one-way

HonoluluPorto

HNL - OPO

HNLOPO

Honolulu

Sat 7/18

7:40 pm-9:45 am

2 stops27h 05m

$463

HonoluluPorto

HNL - OPO

HNLOPO

Honolulu

Sat 7/18

11:20 pm-7:10 am

3 stops44h 50m

$628

HonoluluPorto

HNL - OPO

HNLOPO

Honolulu

Sat 7/18

3:50 pm-10:25 am

1 stop31h 35m

$1,145

HonoluluPorto

HNL - OPO

HNLOPO

Honolulu

Tue 7/21

11:20 pm-3:15 pm

3 stops28h 55m

$1,997

HonoluluPorto

HNL - OPO

HNLOPO

Honolulu

Thu 7/16

8:39 pm-11:15 am

2 stops27h 36m

$2,301

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/17

Showing 1-10 of 14 resultsSorted by cheapest first
1
2
  • Most accurate provider: When it comes to deals on Honolulu-Porto flights, users find the pricing of AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on Honolulu-Porto flight deals on Cheapflights vs. AranGrant >95% of the time. Price accuracy is based on data collected from Honolulu-Porto flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Honolulu-Porto flights, Cheapflights users trust AranGrant the most. AranGrant has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Honolulu-Porto flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Honolulu to Porto

Have a flexible travel schedule? Discover the best time to fly to Porto from Honolulu with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Reviews of airlines servicing Porto

Get insights into the airlines that provide service to Porto. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Porto. Reviews last updated June 19, 2026.
Read reviews from past customers who have flown United Airlines from Honolulu to Porto. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,860 reviews

Comfort

7.3

Boarding

7.7

Food

6.7

Overall

7.4

Crew

8.1

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.
United Airlines
7.4
Good
9,860 reviews
United Airlines
7.4
Good
9,860 reviews

Comfort

7.3

Boarding

7.7

Food

6.7

Overall

7.4

Crew

8.1

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.

Related info for your journey

Find useful and relevant information for your journey from Honolulu to Porto. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Honolulu to Porto?

    Airlines like Lufthansa fly from Honolulu to Porto in about 30h 50m. The time it takes to get you to your destination can typically vary by up to . Honolulu and Porto are separated by a distance of 7680 mi.

  • What is the cheapest airline to fly from Honolulu to Porto round-trip?

    Our cheapest airline available from Honolulu to Porto is United Airlines. Our recent data shows that you can find tickets from as low as $588 on this airline.

  • Can I find deals for flights from Honolulu to Porto that include hotel bookings?

    Yes. In addition to deals on Honolulu to Porto flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Honolulu to Porto?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Honolulu to Porto.

  • Can I find deals for business class flights from Honolulu to Porto?

    Yes. Cheapflights offers flight deals from Honolulu to Porto by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Traveling to a place near Porto?

Book flights to Porto if you plan to visit one of these locations
Vila Nova de Gaia
Aveiro
Arcos de Valdevez
Coimbra

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Honolulu to Porto

See prices for flight routes from nearby airports that may be better suited for you.
Honolulu to Lisbon flights
Honolulu to Faro flights
Hilo to Lisbon flights

Top airline flying from Honolulu to Porto

Discover the top airline that operate flights from Honolulu to Porto. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 19, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$588Average$1,145FlexibilityNo cancel feeOn-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.